Door latch and lock.



J. BRANSPURD.

DOOR. LATCH AND LOCK.

APPLIOATIQN FILED Ammo, 191s.

Patented July '7, 1914.

2 SHEETS-SHEET 1.

n GSW THE NORRIvS PETERS CO.. PHOTO-LITH. WASHINGTON. D. Cl A J. BRANSFOR'D. vDoon LATCH AND LOCKL APPLIOATION FILED AUG,20, 1913` 1,102,567. Patented July 7, 1914 2 SHEETS-SHEET 2.

` l THE NORRIS PETERS CO., PHOTO-LITHO.. WASHINGTON, D.

JOSEPH BBANSFORD, 0F BAKERSFIELD, CALIFORNIA.

DOOR LATCH AND LOCK.

incassa.

Specification of Letters Patent.

Patented July 7, 1914.

Application led August 201, 1913. Serial No. 785,715.

To all whom it may concern Be it known that I, Josnrri BRAiysroRD, citizen of the United States, residing at Bakersfield, in the county of Kern and State of California, have invented certain new and useful Improvements in Door Latches and Locks, of which the following is a specification.

My invention relates to latching devices for doors and more particularly to that class of door latch in which al bolt is operated by the rotation of a handle from either side of the door.

The primary object of my invention is to provide a very simple and effective form of door latch having vertically disposed handles on each side of the door, the handles being rotatable and operatively connected to the latching bolt so that upon a rotation of either one of the handles in the proper direction the bolt will be retracted.

A further object of the invention is the provision of means whereby the latchi'ng bolt may be shifted to adjust it with relation to a door opening to either side of a door casing.

A further object of the invention is to so form the latching device that a dead lock is provided which will hold the latch bolt in its projected position thus locking the door from the inside.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings wherein:

Figure 1 is a side elevation of a portion of a door and the face plate of my improved latch, the face plate being partly roken away to show the interior construction of the latch, the adjacent portion of the door casing being in section. Fig. 2 is a section on the line 2-2 of Fig. 1. Fig. 3 is a section on the line 3 3 of Fig. 2. Fig. 1 is a section on the line 1 -1 of Fig. 2. Fig. 5 is a perspective view of a portion of one of the casing plates, the frame supported thereon, the bolt and the filling piece, the parts being separated from each other to show their detailed construction.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawings by the saine reference characters.

Referring to these figures, 2 designates a door of any suitable construction and having therein a recess 3 within which the bolt is mounted. Preferably the bolt is mounted within the recess 3 by supporting it within a frame land illustrated in detail in Fig. 5. This frame is integral or fastened to a face plate 18 and comprises the two parallel arms 5 and 6 and the base or back 7. The arm 5 of the carrier is recessed on its inside face as at 8, this recess being rectangular in forni and a groove extends rearward from this recess. The inside face of the arm 6 is very slightly recessed as at 9 or reduced in thickness rearward of its forward end.

rlhe bolt 10 is illustrated in detail in Fig. 5 and is beveled upon its forward end as at 11. @ne face of the bolt is provided with a stud 12 and the rear end of the bolt is transversely slotted as at 13. rlhe rear end of the bolt is also provided with the rearwardly projecting pin 141- which passes through the rear end of the back 7 of the carrier 5, and disposed around this pin 111 and bearing always against the rear end of the bolt is a coil spring 15 which acts to project the bolt. Remcvably disposed within the recess S of the arm 5 is a U-shaped filling piece 16, the arms of which are parallel to each other so as to provide a longitudinal slot 17 adapted to receive and accommodate the stud 12 and act as a guide for the stud so that the bolt will not stick or jam within the carrier. Disposed on each face of the door and closing the recess 3 are the plates 18. Both of these plates are alike in construction and are attached to the door in any suitable manner. The

frame 11 is attached to or is integral with :one of these plates. Each plate is slotted as at 19. Projecting outward from each plate are the upper and lower supporting brackets 2O and 21 respectively. The bracket 20 has a circular socket 22 for the reception of the upper end of a rotatable handle 23. The bracket 21 also has a socket 211 for the reception of the lower end of the handle but this socket is extended downward into a recess 25 which extends inward and opens to the slot 19. Disposed in the recess is an operating lever 26 which is pivoted upon a pin 27 extending downward through the recess, this lever projecting rearward or outward beyond the pivot pin 27 and its other end engaging in the slot 13 of the bolt.

The upper end of the handle 23 is reduced and rounded as at 2S to lit within the socket 22 while the lower end of the handle ioY is reduced as at 29 to fit within the socket 24 and is also formed with a tangentially extending lug 30. The inner faceof this lug bears against the edge of therear end of the lever 26 so that when the handle 23 is turned in one direction this lug or projection on the handle will engage with the rear end of the lever and shift it in the direction of the arrow, Fig. 2, to cause a retraction of the bolt, the bolt being projected by the action of the spring 15..`

While l have described only one handle 23 and one lever 26, it is to be understood that the opposite side of the door is to be provided with a handle 23 and allied parts as previously described so that when either of the handles is rotated the bolt will be retracted against the force of the spring.

ln order to provide means for locking the bolt from the inside of the door in its pro-V jected position, Iprovide upon one of the brackets 21 a slot 31 through which passes a stud 32 having a head 33 upon its outer end, the inner end of this stud being connected to a locking pin 34 which passes through the adjacent plate 18 and which is adapted to engage in a recess 35 partly formed in the bolt and partly'in the frame 4. It will be obvious now that when this pin 34 is `forced inward it will engage the bolt in its projectedposition and prevent a retraction of the bolt'under the action of the handles. YllVhen, however, the dead latch constituted by the parts 32, 33 and 34 is shifted outward the bolt is free to be manipulated by the handles.` The bolt 10 is', of course, adapted to be engaged with a keeper plate 36 mounted upon the door casing'37 in the usual manner.

rlhe purpose of providing the filling member 16 is to permit the bolt tobe readily withdrawn from its engagement with the carrier 4 so that the boltV may be shifted or turned around to thus 'change the beveled face 11 of the bolt so that it shall face vone side. Or the other ofthe door as maybe desired and yet provide a guide groove for` the bolt.`

y sition within the carrier by the plateslS but when oney of lthese face plates is removed, the carrier may be readily withdrawn, the filling piece 16 moved and with it the bolt. If the illinglpiece were not used the inside face of the arm 5 of the carrier 4 would have to be longitudinally slotted its entire length to permitthe introduction of the stud 1.2 in the slot and this would permit the bolt to be withdrawn entirely from the carrier` through the open end of the carrier. In my construction, however, the boltis prevented from a complete withdrawal or complete projection through the action of the Serine by the Stad l2eesee11s'vith, th

` The filling piece`16 is held in pov-- is desired to open the door vit is only necessary to rotate the handle 23 on that side of the door in the proper direction to withdraw the bolt. As soon as the handle is released the spring 15 will project the bolt.

My invention is very simple, can be readily applied to all types of doors and is particularly adapted for use with heavy ornamentalhandles disposed vertically such as are used with heavy doors. The latchhas few parts and these very simply constructed. The parts are such that' they are not liable to wear and therefore not liable to 10st motion- .TWhat I lclaim is:

1. A door latching mechanismfincluding a bolt casing, a sliding bolt mounted therein, oppositely disposed handlesrotatable upon their longitudinal axes and mounted upon the bolt casing, and oppositely disposed independently operable leversoperatively engaged at one end by the handles vand at the other end engaging with said bolt.

V2. A door latching mechanism including a bolt casing, upper and lower handle supports projecting from the bolt casing, vertical rotatable handle mounted between the supports and rotatable on its longitudinal axis, a sliding bolt mounted within the bolt casing, and a lever pivotally mounted in one of said supports, one end of the lever engaging the bolt and the other end thereof being engaged by the lower end of the rotatable handle whereby upon a rotation of the handle the lever shall be shifted to pro.- ject the bolt. i

3. door latching mechanism including a bolt casing, upper and lower outwardly projecting handle supports formed upon' the bolt casing, one of said supports being hollow, a vertically disposed handle rotatably mounted between the supports, the lower end of said handle being formed with an offset lug, a bolt mounted within the bolt casing, operating lever therefor pivoted .within the hollow support, one end of said lever engaging a slot in the bolt and the other end offsaid lever, being engaged by the offset .lagon the end of the handle.

4. A door latching mechanism including a bolt Casina, @rre-Sitely disposed, upper and lower handle supports, vertically'disposed handles mounted one between each pair of said supports and rotatable onV its lcmgitudinalA axis, a sliding bolt mounted within the casing and havingk a slotted rear end',V Vand bolt operating members pivoted each within one of the handle supports, the einer @ed O-f each member engaging the slot- Il the belt, en@ end of each; handle being formed with an offset lug adapted to engage with the adjacent end of the corresponding bolt actuating member.

5. A door latching mechanism including oppositely disposed casing plates, one of said plates being formed with a bolt supporting frame, this frame having upper and lower parallel arms, one of said arms being recessed, a filling piece removably disposed in said recess and having a longitudinal guide slot, a bolt mounted between the arms of the frame and removable therefrom, said bolt having a stud extending into the recess of the filling piece, the rear end of the bolt being formed with a transverse slot, upper and lower handle supports mounted on the casing plates, vertically disposed handles mounted between said supports and rotatable therein, and operative connections between both of said handles and said bolt whereby the bolt may be retracted upon a rotation of either of said handles.

6. A door latching mechanism including oppositely disposed casing plates, one of said casing plates having connected thereto a bolt supporting frame, the bolt supporting frame having upper and lower parallel arms, one of said arms being recessed, a filling piece disposed in said recess and removable laterally therefrom, said lling piece being longitudinally slotted, a bolt disposed between said arms and having a stud engaging said slot in the iilling piece, a spring acting to project the bolt, oppositely disposed handles mounted upon the door casing, said handles being vertical and rotatable upon their longitudinal axes, and operative connections between said handles and the bolt whereby the latter may be projected upon a rotation of either of the handles.

In testimony whereof I ai'iix my signature in presence of two witnesses.

J. F. Sr. CLAIR, BEN F. GLEASMAN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of latents,

Washington, D. C. 

